mainMenu = ds_list_create();
mainMenu_Entities = ds_list_create();
mainMenu_Entities_Music = ds_list_create();

ds_list_add(mainMenu, "Entities");
ds_list_add(mainMenu_Entities, "Musical");
ds_list_add(mainMenu_Entities_Music, "Xylophone");
ds_list_add(mainMenu_Entities_Music, "Trumpet");
ds_list_add(mainMenu_Entities_Music, "Drums");
ds_list_add(mainMenu_Entities_Music, "Guitar");
